protected override void RelCreationChange(EntityChangeRelCreation item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity);
if (temp.Any(p => p is EntityChangeRelCreation == false))
{
throw new InvalidOperationException("Unable to schedule a relationship creation for an entity already tracked.");
}
if (temp.Any() && temp.Any(p => !p.Equals(item)))
{
throw new InvalidOperationException("Unable to schedule a relationship creation. Already tracked for another source-destination pair.");
}
if (ChangeLog.Any(p => p is EntityChangeNodeDeletion && p.Entity == item.Source) ||
item.Source.EntityId == null && !ChangeLog.Any(p => p is EntityChangeNodeCreation && p.Entity == item.Source))
{
throw new ArgumentException("Invalid source node");
}
if (ChangeLog.Any(p => p is EntityChangeNodeDeletion && p.Entity == item.Destination) ||
item.Destination.EntityId == null && !ChangeLog.Any(p => p is EntityChangeNodeCreation && p.Entity == item.Destination))
{
throw new ArgumentException("Invalid destination node");
}
if (!temp.Any())
{
ChangeLog.Add(item);
}
}
protected override void NodeUpdateChange(EntityChangeNodeUpdate item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity).ToList();
if (!temp.Any() && item.Entity.EntityId == null)
{
throw new InvalidOperationException("Unable to locate entity. It must be tracked or have an EntityId.");
}
if (temp.Any(p => p is EntityChangeNodeDeletion))
{
throw new InvalidOperationException("Unable to update an entity scheduled for deletion");
}
if (temp.Any(p => p is EntityChangeNodeCreation))
{
return;
}
if (temp.Any(p => p.Inverse != null && p.Inverse.Equals(item)))
{
ChangeLog.Remove(item);
}
else
{
if (temp.Any(p => (p as EntityChangeNodeUpdate)?.Property == item.Property))
{
ChangeLog.RemoveAll(p => temp.Contains(p) && (p as EntityChangeNodeUpdate)?.Property == item.Property);
}
ChangeLog.Add(item);
}
}
protected override void NodeCreationChange(EntityChangeNodeCreation item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity);
if (temp.Any(p => p is EntityChangeNodeCreation == false))
{
throw new InvalidOperationException("Unable to schedule a node creation for an entity already tracked.");
}
if (!temp.Any())
{
ChangeLog.Add(item);
}
}
protected override void ConnectionMergeChange(EntityChangeConnectionMerge item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity && p is EntityChangeConnectionMerge).ToList();
ChangeLog.RemoveAll(p =>
temp.Contains(p) &&
((p as EntityChangeConnectionMerge).Source != item.Source || (p as EntityChangeConnectionMerge).Destination != item.Destination));
EntityChangeConnectionMerge existing = temp.FirstOrDefault(p => (p as EntityChangeConnectionMerge).Source == item.Source && (p as EntityChangeConnectionMerge).Destination == item.Destination) as EntityChangeConnectionMerge;
if (existing == null)
{
ChangeLog.Add(item);
}
else
{
existing.Order = item.Order;
}
}
protected override void RelDeletionChange(EntityChangeRelDeletion item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity).ToList();
if (!temp.Any() && item.Entity.EntityId == null)
{
return;
}
if (temp.Any(p => p is EntityChangeRelCreation || p is EntityChangeConnectionMerge))
{
ChangeLog.RemoveAll(p => temp.Contains(p));
}
else
{
ChangeLog.RemoveAll(p => temp.Contains(p));
ChangeLog.Add(item);
}
}
protected override void NodeDeletionChange(EntityChangeNodeDeletion item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity).ToList();
if (!temp.Any() && item.Entity.EntityId == null)
{
throw new InvalidOperationException("Unable to locate entity. It must be tracked or have an EntityId.");
}
if (temp.Any(p => p is EntityChangeNodeCreation))
{
ChangeLog.RemoveAll(p => temp.Contains(p));
}
else
{
ChangeLog.RemoveAll(p => temp.Contains(p));
ChangeLog.Add(item);
}
foreach (EntityChangeRelCreation rel in ChangeLog.Where(p => p is EntityChangeRelCreation && (((EntityChangeRelCreation)p).Source == item.Entity || ((EntityChangeRelCreation)p).Destination == item.Entity)).ToList())
{
RelDeletionChange(new EntityChangeRelDeletion(rel.Entity as IOgmConnection));
}
}
